osmocom/wireshark
14
0
Fork 1
Code Issues Pull requests Projects Releases Wiki Activity
wireshark/epan/dissectors/packet-egd.c
Michael Mann 1e60d63c8c Create call_data_dissector() to call data dissector. 
This saves many dissectors the need to find the data dissector and store a handle to it.

There were also some that were finding it, but not using it.
For others this was the only reason for their handoff function, so it could be eliminated.

Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b
Reviewed-on: https://code.wireshark.org/review/14530
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-03-20 17:38:03 +00:00

258 lines
7.6 KiB
C
Raw Blame History

/* packet-egd.c
* Routines for Ethernet Global Data dissection
* EGD Home: www.gefanuc.com
*
* Copyright 2008
* 29 July 2008 -- ryan wamsley
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
#define EGD_PORT 18246 /* 0x4746 */
#define EGD_ST_NONEW 0
#define EGD_ST_NOERROR 1
#define EGD_ST_CONSUMED 2
#define EGD_ST_SNTPERR 3
#define EGD_ST_SPECERR 4
#define EGD_ST_REFRESHERR 6
#define EGD_ST_REFEXDERR 7
#define EGD_ST_IPERR 10
#define EGD_ST_RESOURSEERR 12
#define EGD_ST_NAMERES 16
#define EGD_ST_ETHERR 18
#define EGD_ST_NOSUPPORT 22
#define EGD_ST_NORESP 26
#define EGD_ST_CREATEERR 28
#define EGD_ST_DELETED 30
void proto_register_egd(void);
void proto_reg_handoff_egd(void);
/* Translate status to string */
static const value_string egd_stat_vals[] = {
{ EGD_ST_NONEW, "No new status event has occurred" },
{ EGD_ST_NOERROR, "No error currently exists" },
{ EGD_ST_CONSUMED, "No error, data consumed" },
{ EGD_ST_SNTPERR, "SNTP error" },
{ EGD_ST_SPECERR, "Specification error" },
{ EGD_ST_REFRESHERR, "Data refresh error" },
{ EGD_ST_REFEXDERR, "Data refresh period exceeded" },
{ EGD_ST_IPERR, "IP Layer not currently initialized" },
{ EGD_ST_RESOURSEERR, "Lack of resource error" },
{ EGD_ST_NAMERES, "Name Resolution in progress" },
{ EGD_ST_ETHERR, "Loss of Ethernet Interface error" },
{ EGD_ST_NOSUPPORT, "Ethernet Interface does not support EGD" },
{ EGD_ST_NORESP, "No Response from Ethernet Interface" },
{ EGD_ST_CREATEERR, "Failed to create an exchange." },
{ EGD_ST_DELETED, "Configured exchange deleted." },
{ 0, NULL }
};
static int proto_egd = -1;
static int hf_egd_ver = -1;
static int hf_egd_type = -1;
static int hf_egd_rid = -1;
static int hf_egd_pid = -1;
static int hf_egd_exid = -1;
static int hf_egd_time = -1;
static int hf_egd_notime = -1;
static int hf_egd_stat = -1;
static int hf_egd_csig = -1;
static int hf_egd_resv = -1;
static gint ett_egd = -1;
static gint ett_status_item = -1;
static int dissect_egd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
/* replace UDP with EGD in display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "EGD");
/* Clear out stuff in the info column */
col_clear(pinfo->cinfo, COL_INFO);
col_add_fstr(pinfo->cinfo, COL_INFO, "Data Msg: ExchangeID=0x%08X, RequestID=%05u",
tvb_get_letohl(tvb, 8), tvb_get_letohs(tvb, 2));
if (tree)
{
proto_item *ti = NULL;
proto_item *notime = NULL;
proto_tree *egd_tree = NULL;
tvbuff_t *next_tvb = NULL;
gint offset, data_length;
guint32 sectime;
nstime_t egd_time;
memset(&egd_time, 0, sizeof(nstime_t));
offset = 0;
ti = proto_tree_add_item(tree, proto_egd, tvb, 0, -1, ENC_NA);
egd_tree = proto_item_add_subtree(ti, ett_egd);
proto_tree_add_item(egd_tree, hf_egd_type, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(egd_tree, hf_egd_ver, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(egd_tree, hf_egd_rid, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(egd_tree, hf_egd_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(egd_tree, hf_egd_exid, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
/* time */
sectime = tvb_get_letohl(tvb, offset);
if (0 == sectime)
{
notime = proto_tree_add_item(egd_tree, hf_egd_notime, tvb, offset, 8, ENC_LITTLE_ENDIAN);
proto_item_append_text(notime, "--No TimeStamp");
}
else
{
egd_time.secs = tvb_get_letohl(tvb, offset);
egd_time.nsecs = tvb_get_letohl(tvb, offset+4);
proto_tree_add_time(egd_tree, hf_egd_time, tvb, offset, 8, &egd_time);
}
offset += 8;
proto_tree_add_item(egd_tree, hf_egd_stat, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(egd_tree, hf_egd_csig, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(egd_tree, hf_egd_resv, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
data_length = tvb_reported_length_remaining(tvb, offset);
if (data_length > 0)
{
next_tvb = tvb_new_subset_remaining(tvb, offset);
call_data_dissector(next_tvb, pinfo, egd_tree);
}
}
return tvb_captured_length(tvb);
}
void proto_register_egd(void)
{
static hf_register_info hf[] =
{
{ &hf_egd_ver,
{ "Version", "egd.ver",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_type,
{ "Type", "egd.type",
FT_UINT8, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_rid,
{ "RequestID", "egd.rid",
FT_UINT16, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_pid,
{ "ProducerID", "egd.pid",
FT_IPv4, BASE_NONE,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_exid,
{ "ExchangeID", "egd.exid",
FT_UINT32, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_time,
{ "Timestamp", "egd.time",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_notime,
{ "Timestamp", "egd.notime",
FT_UINT64, BASE_HEX,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_stat,
{ "Status", "egd.stat",
FT_UINT32, BASE_DEC,
VALS(egd_stat_vals), 0x0,
NULL, HFILL }
},
{ &hf_egd_csig,
{ "ConfigSignature", "egd.csig",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
},
{ &hf_egd_resv,
{ "Reserved", "egd.rsrv",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL }
}
};
static gint *ett[] =
{
&ett_egd,
&ett_status_item
};
proto_egd = proto_register_protocol (
"Ethernet Global Data", /* name */
"EGD", /* short name */
"egd" /* abbrev */
);
proto_register_field_array(proto_egd, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void proto_reg_handoff_egd(void)
{
dissector_handle_t egd_handle;
egd_handle = create_dissector_handle(dissect_egd, proto_egd);
dissector_add_uint("udp.port", EGD_PORT, egd_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
Reference in a new issue View git blame Copy permalink